Fix 11358: FP containerOutOfBounds for container passed by pointer (#4626)

Author: pfultz2

lib/valueflow.cpp

@@ -7689,6 +7689,14 @@ struct ContainerExpressionAnalyzer : ExpressionAnalyzer {
         }
     }
 
+    int getIndirect(const Token* tok) const override
+    {
+        if (tok->valueType()) {
+            return tok->valueType()->pointer;
+        }
+        return ValueFlowAnalyzer::getIndirect(tok);
+    }
+
     Action isModified(const Token* tok) const override {
         Action read = Action::Read;
         // An iterator won't change the container size

test/teststl.cpp

@@ -886,6 +886,13 @@ class TestStl : public TestFixture {
                     "  v[0];\n"
                     "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        checkNormal("void f(std::vector<int>* v) {\n"
+                    "  if (v->empty())\n"
+                    "    v->push_back(1);\n"
+                    "  auto x = v->back();\n"
+                    "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void outOfBoundsSymbolic()